检索结果-南通市图书馆

A Sharding Scheme Based on Graph Partitioning Algorithm for Public Blockchain

computer Modeling in Engineering & Sciences 2024年第6期139卷 3311-3327页

作者： Shujiang Xu Ziye Wang Lianhai Wang Miodrag J.Mihaljevi′c Shuhui Zhang Wei Shao Qizheng Wang Key Laboratory of computing Power Network and Information Security Ministry of EducationShandong Computer Science CenterQilu University of Technology(Shandong Academy of Sciences)Jinan250014China Shandong Provincial Key Laboratory of computer Networks Shandong Fundamental Research Center for Computer ScienceJinan250014China Mathematical Institute The Serbian Academy of Sciences and ArtsBelgrade11000Serbia

Blockchain technology,with its attributes of decentralization,immutability,and traceability,has emerged as a powerful catalyst for enhancing traditional industries in terms of optimizing business ***,transaction performance and scalability has become the main challenges hindering the widespread adoption of *** to its inability to meet the demands of high-frequency trading,blockchain cannot be adopted in many *** improve the transaction capacity,researchers have proposed some on-chain scaling technologies,including lightning networks,directed acyclic graph technology,state channels,and shardingmechanisms,inwhich sharding emerges as a potential scaling ***,excessive cross-shard transactions and uneven shard workloads prevent the sharding mechanism from achieving the expected *** paper proposes a graphbased sharding scheme for public blockchain to efficiently balance the transaction *** crossshard transactions and evening-out workloads among shards,the scheme reduces transaction confirmation latency and enhances the transaction capacity of the ***,the scheme can achieve a high-frequency transaction as well as a better blockchain *** results show that the scheme effectively reduces the cross-shard transaction ratio to a range of 35%-56%and significantly decreases the transaction confirmation latency to 6 s in a blockchain with no more than 25 shards.

关键词： Blockchain sharding graph partitioning algorithm

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Non-linear dynamic state-space network modeling for decoding neurodegeneration

引用

Neural Regeneration Research 2024年第9期19卷 1879-1880页

作者： Venkata c.chirumamilla chi Wang Ip Martin Reich Robert Peach Jens Volkmann Bahman Nasseroleslami Muthuraman Muthuraman Prenatal Pediatrics Institute Children’s National HospitalWashingtonDCUSA Neural Engineering with Signal Analytics and Artificial Intelligence Department of NeurologyUniversity of WürzburgWürzburgGermany Academic Unit of Neurology Trinity Biomedical Sciences InstituteTrinity College DublinUniversity of DublinDublinIreland

Neurodegenerative disorders represent a pervasive global health challenge,yet therapeutic options remain conspicuously *** disorders are inherently dynamic processes within the central nervous system,unfolding across distinct sub-stages:initial structural neuronal alterations(sub-stage 1),functional impairment(sub-stage 2),and culminating in neuronal death(sub-stage 3).

关键词： alterations impairment dynamic

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Direct-Seeded Rice: Genetic Improvement of Game-changing Traits for Better Adaption

引用

Rice science 2024年第4期31卷 417-433页

作者： Priyanka NEGI Jagadish RANE Rajendra Sadashiv WAGH Tukaram Jayaram BHOR Dipti Digambar GODSE Priyanka JADHAV c.ANILKUMAR Dasari SREEKANTH K.SAMMI REDDY Sharad Ramrao GADAKH K.M.BORAIH c.B.HARISHA P.S.BASAVARAJ Indian council of Agricultural Research(IcAR)-National Institute of Abiotic Stress Management Baramati 413115India Mahatma Phule Krishi Vidyapeeth Rahuri 413722India IcAR-central Institute for Arid Horticulture Bikaner 334006India IcAR-National Rice Research Institute Cuttack 753006India IcAR-Directorate of Weed Research Jabalpur 482004India Dr.Panjabrao Deshmukh Krishi Vidyapeeth Akola 444104India

The sustainability of rice production continues to be a subject of uncertainty and inquiry attributed to shifts in climatic conditions. In light of the impending climate change crisis and the high labor and water costs accompanying it, direct-seeded rice(DSR) is unquestionably one of the most practical solutions. Despite its resource and climate-friendly advantages, early maturing rice faces weed competitiveness and seedling establishment challenges. Resolving these issues is crucial for promoting its wider adoption among farmers, presenting it as a more effective sustainable rice cultivation method globally. Diverse traditional and contemporary breeding methods are employed to mitigate the limitations of the DSR approach, leveraging advanced techniques such as speed breeding and genome editing. Focusing on key traits like mesocotyl length elongation, early seedling vigor, root system architecture, and weed competitiveness holds promise for transformative improvements in DSR adaptation at a broader scale within farming communities. This review aims to summarize how these features contribute to increased crop production in DSR conditions and explore the research efforts focusing on enhancing DSR adaptation through these traits. Emphasizing the pivotal role of these game-changing traits in DSR adaptation, our analysis sheds light on their potential transformative impact and offers valuable insights for advancing DSR practices.

关键词： climate change direct-seeded rice aerobic rice early vigor trait

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

cD4^(+)T cells produce IFN-I to license cDc1s for induction of cytotoxic T-cell activity in human tumors

引用

cellular & Molecular Immunology 2024年第4期21卷 374-392页

作者： Xin Lei Daniël c.de Groot Marij J.P.Welters Tom de Wit Ellen Schrama Hans van Eenennaam Saskia J.Santegoets Timo Oosenbrug Annemarthe van der Veen Joris L.Vos charlotte L.Zuur Noel F.c.c.de Miranda Heinz Jacobs Sjoerd H.van der Burg Jannie Borst Yanling Xiao Department of Immunology Leiden University Medical CenterLeidenThe Netherlands Oncode Institute Leiden University Medical CenterLeidenThe Netherlands Department of Tumor Biology and Immunology The Netherlands Cancer InstituteAmsterdamThe Netherlands Department of Medical Oncology Oncode InstituteLeiden University Medical CenterLeidenThe Netherlands IMMIOS B.V. OssThe Netherlands Division of Medical Oncology The Netherlands Cancer InstituteAmsterdamThe Netherlands Department of Otorhinolaryngology Leiden University Medical center LeidenThe Netherlands Department of Pathology Leiden University Medical CenterLeidenThe Netherlands

cD4^(+)T cells can"help"or"license" conventional type 1 dendritic cells(cDc1s)to induce cD8^(+)cytotoxic T lymphocyte(cTL)anticancer responses,as proven in mouse *** recently identified cDc1s with a transcriptomic imprint of cD4^(+)T-cell help,specifically in T-cell-infiltrated human cancers,and these cells were associated with a good prognosis and response to PD-1-targeting ***,we delineate the mechanism of cDc1 licensing by cD4^(+)T cells in *** cD4^(+)T cells produce IFNβvia the STING pathway,which promotes MHc-I antigen(cross-)presentation by cDc1s and thereby improves their ability to induce cTL anticancer *** cooperation with cD40 ligand(L),IFNβalso optimizes the costimulatory and other functions of cDc1s required for cTL response ***-I-producing cD4^(+)T cells are present in diverse T-cell-infiltrated cancers and likely deliver“help”signals to cTLs locally,according to their transcriptomic profile and colocalization with“helped/licensed”cDcs and tumor-reactive cD8^(+)T *** agreement with this scenario,the presence of IFN-I-producing cD4^(+)T cells in the TME is associated with overall survival and the response to PD-1 checkpoint blockade in cancer patients.

关键词： cD4^(+)T-cell help cDc1 licensing IFN-I signaling cD40 costimulation (cross-)presentation cTL priming Tumor control

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Glucagon-like peptide 1 receptor activation:anti-inflammatory effects in the brain

引用

Neural Regeneration Research 2024年第8期19卷 1671-1677页

作者： Yolanda Diz-chaves Zainab Maastor carlos Spuch José Antonio Lamas Lucas c.González-Matías Federico Mallo Biomedical Research centre(cINBIO) Laboratory of EndocrinologyUniversity of VigoGalicia Sur Health Research InstituteVigoSpain Translational Neuroscience Research Group Galicia Sur Health Research InstituteCIBERSAMHospitalÁlvaro CunqueiroSala InvestigaciónEstrada Clara CampoamorVigoSpain Biomedical Research centre(cINBIO) Laboratory of NeuroscienceUniversity of VigoGalicia Sur Health Research InstituteVigoSpain

The glucagon-like peptide 1 is a pleiotropic hormone that has potent insulinotropic effects and is key in treating metabolic diseases such as diabetes and ***-like peptide 1 exerts its effects by activating a membrane receptor identified in many tissues,including diffe rent brain ***-like peptide 1 activates several signaling pathways related to neuroprotection,like the support of cell growth/survival,enhancement promotion of synapse formation,autophagy,and inhibition of the secretion of proinflammatory cytokines,microglial activation,and apoptosis during neural *** glial cells,including astrocytes and microglia,maintain metabolic homeostasis and defe nse against pathogens in the central nervous *** brain insult,microglia are the first cells to respond,followed by reactive *** activated cells produce proinflammato ry mediators like cytokines or chemokines to react to the ***,under these circumstances,mic roglia can become chro nically inflammatory by losing their homeostatic molecular signature and,consequently,their functions during many *** processes promote the development of neurological disorders and influence their pathological evolution:like the formation of protein aggregates,the accumulation of abnormally modified cellular constituents,the formation and release by injured neurons or synapses of molecules that can dampen neural function,and,of critical impo rtance,the dysregulation of inflammato ry control *** glucagonlike peptide 1 receptor agonist emerges as a critical tool in treating brain-related inflammatory pathologies,restoring brain cell homeostasis under inflammatory conditions,modulating mic roglia activity,and decreasing the inflammato ry *** review summarizes recent advances linked to the anti-inflammato ry prope rties of glucagon-like peptide 1 receptor activation in the brain related to multiple sclerosis,Alzheimer’s disease,Parkins

关键词： astrocytes brain glucagon-like peptide 1 receptor inflammation microglia

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A transient shift in equatorial hydrology and vegetation during the Eocene Thermal Maximum 2

引用

Geoscience Frontiers 2024年第5期15卷 174-181页

作者： Gaurav Srivastava Harshita Bhatia Poonam Verma Yogesh P.Singh Shailesh Agrawal Torsten Utescher R.c.Mehrotra Birbal Sahni Institute of Palaeosciences 53 University RoadLucknow 226007India Academy of Scientific and Innovative Research(AcSIR) Ghaziabad 201002India Senckenberg Research Institute and Natural History Museum Frankfurt/M.Senckenberg Research Station of Quaternary PalaeontologyWeimerGermany Institute for Geosciences University of BonnNussallee 853115 BonnGermany

The equatorial evergreen forests nourish the world’s biodiversity hotspots and are considered the lungs of the ***,their future survival is uncertain,due to anthropogenically increased carbon emissions and changes in the hydrological *** the changes in the hydrological cycle in the equatorial region due to an increase in carbon emission is of prime *** early Paleogene hyperthermal events are potential analogs to understand the consequences of high carbon emission on the hydrological *** this communication,we quantify the terrestrial seasonal climate using the plant proxy and infer that during the Eocene Thermal Maximum 2 when atmospheric carbon dioxide concentration was>1000 ppmv near the palaeo-equator(~0.6°N),the rainfall decreased significantly,leading to the expansion of deciduous *** study raises important questions about the future survival of equatorial rainforests and biodiversity hotspots under increased carbon emissions.

关键词： coexistence approach climate ETM-2 Global warming Hyperthermal Paleogene

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

亚里士多德的善和恶

引用

世界哲学 2024年第2期 68-78页

作者： [爱尔兰]c.D.c.里夫孔祥润(译) 美国北卡罗来纳大学教堂山分校哲学系天津理工大学马克思主义学院

亚里士多德确实有一种关于恶的理论。善在定义上优先于恶,这是由善所需要的本体论边界决定的。如果善实际上就是卓越的存在,那么恶必定是这种存在的缺乏。在实体范畴中,亚里士多德的善是一种活的存在,在对自身的沉思中,第一性的神获得... 详细信息

亚里士多德确实有一种关于恶的理论。善在定义上优先于恶,这是由善所需要的本体论边界决定的。如果善实际上就是卓越的存在,那么恶必定是这种存在的缺乏。在实体范畴中,亚里士多德的善是一种活的存在,在对自身的沉思中,第一性的神获得了善并且是幸福的。由此类推,如果存在一种实体范畴上的恶,那么它必定是一种能对自身加以沉思的活的存在。然而在亚里士多德勾勒的事物体系中,这种观念是无法实现的。亚里士多德的善的理论排除了把一种恶(即实体性的巨大的恶)等同于善的可能性。这种理论认真对待伦理上的恶,把它当作心理学、政治学问题,而不是当作本体论问题。无条件的恶说的不是理性的神灵,而是心理变态之人或反社会之人,说的是一位恶人,尽管这个人处在一种特定的社会,即良好的社会之中。

关键词：亚里士多德善恶幸福

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Experimental study of corner separation and unsteady characteristics in linear compressor cascades with and without sweeping jet actuator

引用

Propulsion and Power Research 2024年第3期13卷 360-374页

作者： S.W.chen W.H.Li c.Xu Q.H.Meng School of Energy Science and Engineering Harbin Institute of TechnologyHarbinHeilongjiang 150001China AVIc Shenyang Aircraft Design and Research Institute Shenyang 110035China

Sweeping jet actuator(SJA)has been widely applied for activeflow control in *** this paper,the SJA character in compressor cascade and its performance for separation control in innerflows are ***-averaged and transientflowfield measurement,together with visualization methods are *** is found that endwall effects are important for both SJA behaviors and SJA performance for separation control in compressor *** is a maximum of 12.7%total pressure loss reduction with SJA placed near the separation position,close to the endwall and under *** characteristic frequencies in theflowfield contribute to the capture of influence regions of vortices and excitation *** concentrated shedding vortices and SJA jets impact region helped to judge that SJA energizes low momentumfluids in a large region and matches the high loss core *** be concrete,theflow separation control mechanism of SJA lies on the interruption of the blade suction surface boundary layer development and the restriction of the lifting of the boundary layer from end-wall towards blade suction surface.

关键词： compressor cascade Activeflow control Sweeping jet actuator corner separation Oilflow visualization

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

巴西油气勘探开发历程:从陆上到超深水

引用

石油勘探与开发 2024年第4期51卷 796-806页

作者： ANJOS Sylvia M c SOMBRA cristiano L SPADINI Adali R 巴西国家石油公司里约热内卢20231-030巴西

21世纪以来,随着桑托斯盆地深水盐下获得一系列重大油气发现,巴西东部海域成为全球深水油气勘探与生产的热点区域。通过全面回顾巴西油气勘探开发历程,系统阐述了从陆上到海域、从浅水到深水—超深水直至盐下勘探的探索实践、战略转变... 详细信息

21世纪以来,随着桑托斯盆地深水盐下获得一系列重大油气发现,巴西东部海域成为全球深水油气勘探与生产的热点区域。通过全面回顾巴西油气勘探开发历程,系统阐述了从陆上到海域、从浅水到深水—超深水直至盐下勘探的探索实践、战略转变、重大突破和关键理论技术。巴西国家石油公司(简称巴西国油)自1953年成立以后的15年间,在陆上古生界克拉通盆地和断陷盆地进行了勘探,并于断块和三角洲砂体圈闭获得了一些中小型油气发现。20世纪70年代,应用重力流沉积模式和高质量三维地震等勘探新技术,在坎波斯盆地浅水中发现Namorado和Enchova等油田,随后深水盐上勘探获得突破,成功发现Marlim、Roncador等大型油田。21世纪初,通过盐下含油气系统、碳酸盐岩成储成藏模式和核磁共振测井等理论技术攻关,推动桑托斯盆地下白垩统湖相碳酸盐岩陆续获得Tupi(Lula)、Buzios、Mero等世界级超深水盐下大油田的系列重大发现。在复杂的深水作业环境下,油气开发工程面临巨大挑战,巴西国油通过启动深水研发计划(PROcAP),开发并实施窄压力窗口控压钻井、加压钻井液帽钻井、多段智能完井、水下采油及浮式生产平台开发和流动保障等关键技术,显著提升了钻完井、油气田开发和输运的效率及安全性。此外,在浮式采储卸油系统建产规模受限的情况下,推进全球最大规模的cO_(2)捕集、驱油利用与埋存工程(ccUS-EOR),有效减少温室气体排放并提高了原油采收率。上述理论技术的发展和应用,也为全球深水油气勘探开发提供了宝贵经验。未来巴西油气勘探将继续聚焦深水盐下碳酸盐岩和盐上浊积岩,并在古生界天然气等勘探领域持续寻求新的发现,同时通过技术创新和战略合作,促进巴西石油天然气行业的可持续发展。

关键词：巴西深水盐下勘探坎波斯盆地桑托斯盆地浊积岩湖相碳酸盐岩深水开发流动保障

来源：

维普期刊数据库

同方期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Multichannel coupling induced topological insulating phases with full multimerization

引用

Photonics Research 2024年第3期12卷 491-498页

作者： JUN LI YAPING YANG c-M.HU MOE Key Laboratory of Advanced Micro-Structured Materials School of Physics Science and EngineeringTongji UniversityShanghai 200092China Department of Physics and Astronomy University of ManitobaWinnipegManitoba R3T 2N2Canada

We propose and experimentally realize a class of quasi-one-dimensional topological lattices whose unit cells are constructed by coupled multiple identical resonators,with uniform hopping and inversion *** the presence of coupling-path-induced effective zero hopping within the unit cells,the systems are characterized by complete multimerization with degenerate-1 energy edge states for open boundary condition.

关键词： symmetry topological coupling

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：